Apparatus for grinding or mixing cacao, chocolate, and the like



Jan. 30, 1923. 1,443,926.

0. POSTRANECKY.

APPARATUS FOR GRINDING 0R MIXING CACAO, CHOCOLATE, OR THE LIKE. I

HLED JULY 7' I914.

lllm- HIII .formation of said bottom in Patented Jan. 30, 1923.

CARL POS'I'RANECKY, or DBESDEN, GERMANY.

1,3,92 rare APPARATUS non GRINDING 0a MIXING CACAO, CHOCOLATE, AND THE LIKE.

Application filed July 7,

To (ZZZ whom it may concern Be it known that I, CARL PosTRANEoKY, a subject of the King of Saxony, and resident of Dresden, Germany, have invented certain new and useful Improvements in Apparatus for Grinding or Mixing Cacao Chocolate, and the like, of which the following is a specification.

Hitherto, apparatus for grinding or m xing materials have become known, in which stirring members are moved in circular or other fashion within a vessel having a straight or spherical bottom. It has also been proposed to construct said stirring memer as a roll, which moves over a straight bottom in permanent direct contact with the latter.

The present invention to construct an apparatus of the type mentioned, having a vessel or trough with a spherical bottom and stirring members forming each two rolls on a common axle, said rolls being of symmetrical shape to the such a way that their whole rolling surfaces are in permanent direct contact with the latter, while their mounting is such that they perform three different stirring and rolling actions, whereby a thorough grinding or mixing of the material contained in said trough is obtained.

The annexed: drawing shows two appropriate constructional forms of the subject matter of the invention;

Fig. 1 is a side view of the improved apparatus showing one form, while Fig. 2 is a side view of part of the apparatus, showing the other form.

e apparatus comprises a trough a; having a bottom of spherical shape, on which the rolling and stirring device is arranged. The latter comprises an upper frame I), which is keyed on a rotary power-driven shaft 0. From said frame project inclined depending arms or axles 0?, preferably three,

has for its object of which each is connected. in a way known in b the art, with a planet-gearing, which causes a body arranged on the end of the arm to rotate.

Each of said of two rolls f,

bodies 011 the arms (5 consists which are revolubly mounted transverse axle e fixed to the end of the axle (Z at right angles thereto. F

Upon rotation of the shaft 0, the arms d together with the bodies thereon are set in circular rotation. Further, by means of the any direction and thus i914. Serial No. 849,485.

forms three different stirring and rolling actions, and the material is worked therebyin thoroughly mixed or ground.

In order to forming their be in permanent direct contact with the spherical bottom of the trough a, which is permit of the bodies perdesiredeflect is further increased.

he inclined position of the arms d has the advantage that always that roll, which 85 slid material again down or inwards. With arms assuming vertical position on a straight action of the rolls.

The preferred form of construction is that shown in Fig. 2, as in this case the material cannot settle on thecentre of the bottom of the trough but slid declined sides of the bottom along the rollin odies f, the manifold action of the latter being the same as above described.

s shown in Fig. 1, a rake h in permanent contact with the upper be provided and fixed on a transverse stay 71 keyed to the whereby any material sticking to the rolling bodies is stripped-off.

urthermore, a shovel-like member k demiddle of the bottom.

Intended actions, they must f (see 75 es continuously down the part of the rolls may consisting of two rolls, each roll being of symmetric-(Ll shape to the formation of said 15 bottom and thus adapted to be with its whole rollin surtgice' in permanent direct contact with the latter, substantially as and for the purpose set forth, V

In testimony whereof I havehereunto set 20 iny'hand in'the'p'resence of two subscribing witnesses.

CARL POSTRANEGKY.

Witnesses:

'Lno BERGHOLZ,

PAUL AREAS. 

